I used the cooling fans differently today. I let the engine warm up a little and when the head temperature was 100°C I switched the fans on. I rode around town for a little over an hour (light traffic) keeping an eye on the temperature. Mostly it was about 130°C – 140°C but did peak at 154°C going up a hill.
It was a pretty warm day, about 34°C. Normally the engine would get very hot with this sort of riding – around 190°C.
Using the fans in this way is probably the best way to run them – it’s much easier to keep something from getting hot than to try to cool it down once it is.
10 minutes from home I switched the fans off. Engine temperature rose quickly and peaked at 203°C, settling around 190°C.
Yes, these fans work, and work well.